Abstract: “Multi-Carrier Code Division Multiple Access MC-CDMA is a promising technology for supporting high data rate in next generation wireless networks. By combining MCCDMA technology with Multiple-Input Multiple-Output (MIMO) spatial multiplexing, data transfer rate can be enhanced. However, the performance of MCCDMA technology is limited by the multiple-access Interference (MAI) and Inter- Carrier Interference (ICI). In this paper, the interference noise is diminished by adopting power control and subcarrier allocation methods to enhance the system performances like capacity, BER and power savings through Iterative water filling game theory. The water filling game strategy assigns power level to each subcarrier based on the SINR value received by the transmitter instead of getting full channel state information, which is time varying in nature. The subcarrier group assignment is implemented by selecting best subcarriers with maximum SINR value. The performances of mean capacity, BER and pow”

Keywords: Channel State Information, Inter Carrier Interference, IWFA, Qos- Quality of Services, Multiple-Access Interference, MCCDMA, Signal to Interference plus Noise Ratio.